[Video] Q3: Snow fell and then stopped for a time. when the snow began to fall again, it fell at a faster rate than it had initially. assuming that none of the snow melted during the time indicated, which of the following graphs could model the total accumulation of snow versus time?

Explanation for Question 3 From the Math (Calc) Section on the Official Sat Practice Test 6

Question three reads snow fell and then stopped for a time when the snow 2 began to fall. Again, it fell at a faster rate than it had initially, 3 assuming that none of the snow melted during the time indicated which of the 4 following graphs could model the total accumulation of snow versus time. 5 All right. So we're trying to find the graph that essentially translates these words 6 into graphical format. So the first step that we're given 7 is that snow fell and then stopped for a time. 8 All right. So thinking about this in physical terms, 9 the accumulation should go up at the beginning because as snow is falling, 10 snow is essentially like piling up on the ground. 11 And then if it stopped for a time, it means that the accumulation should 12 stop as well because there's no new snow being added. 13 So we can see that the only, the only answer choice we can eliminate 14 right now is going to be D because this doesn't show that plateau, 15 it doesn't show the snow stopping, but all of these do show a plateau. 16 And then it says when the snow began to fall, again, 17 it fell at a faster rate than it had initially. 18 Okay. So we know that the accumulation is going to start to go up 19 again, as snow begins to fall again. 20 And it's saying that it fell at a faster rate, so the accumulation should 21 be at a faster rate. And if you remember that slope is going to 22 be equal to rise overrun. 23 So if there is a faster rate for the second round 24 of snowfall, there should ...